MC_Alpha_15

Big update. Downloaded transform snap utility plugin and abandoned
background. Now everything is snapping into the grid system. Hopefully
we can just use prefabs to rapidly prototype scenes. Other additions:

- first pass at an elevator (really crappy, we'll need to implement
your pseudo code)
- loads new scene when reaching the end (proof of concept)
MC_Alpha_16

BOUGHT 2D TOOLKIT, CHECKING IN BEFORE PROCEEDING